define knee-jerk
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Translations for knee jerk Definitions for knee jerk. Here are all the possible meanings and translations of the word knee jerk. Princeton's WordNet(0.00 / 0 votes)Rate this definition: knee jerk, knee-jerk reflex, patellar reflex(noun) a reflex extension of the leg resulting from a sharp tap on the patellar tendon. Knee jerk(n.) emotional and predictable; -- of certain people and their reactions to events. Chaldean Numerology. The numerical value of knee jerk in Chaldean Numerology is: 9.
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Understanding the Stretch Reflex (or Myotatic Reflex) The stretch reflex; which is also often called the myotatic reflex, knee-jerk reflex, or deep tendon reflex, is a pre-programmed response by the body to a stretch stimulus in the muscle.he stretch reflex can be activated by external forces (such as a load placed on the muscle) or internal forces (the motor neurons being stimulated from within.) An example of the former is a person holding an empty tray in their outstretched arm and then having a plate of food set on it.
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rigidity cogwheel rigidity tension in a muscle which gives way in little jerks when the muscle is passively stretched. decerebrate rigidity rigid extension of an animal's legs as a result of decerebration; occurring in humans as a result of lesions in the upper brainstem. (rĭ-jĭd′ĭ-tē).
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jaw jerk jaw jerk. Chin reflex. knee jerk. The extension of the lower leg upon striking the patellar tendon when the knee is flexed at a right angle. Knee jerk is absent in locomotor ataxia, infantile paralysis, meningitis, destructive lesions of the lower part of the spinal cord, and certain forms of paralysis.
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Definition of jerk Slang terms with the same root words. Definitions include: a sexual practice in which a group of men stand in a circle and engage in mutual masturbation, with or without interpersonal contact. Definitions include: censored version of go fuck yourself. Definitions include: a mean person.
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Ch. 11 Spinal cord: clinical applications What does Patellar reflexes (knee jerk) do? this reflex is blocked by damage to the sensory or motor nerves supplying the muscle or to the integrating centers in the second, third, or fourth, lumbar segments of the spinal cord.
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Ankle jerk reflex Ankle jerk reflex. The ankle jerk reflex, also known as the Achilles reflex, occurs when the Achilles tendon is tapped while the foot is dorsi-flexed. A positive result would be the jerking of the foot towards its plantar surface. Being a deep tendon reflex, it is monosynaptic.
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Exercise 19: Somatic Reflexes Patellar reflex. the extension of the knee that occurs when the quadriceps femoris tendon is stretched; a stretched tendon will stretch teh muscle and cause it to contract; this reflex helps prevent injury by preventing muscles from overstretching; the stretch reflex helps maintain posture and equilibrium.
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Achilles reflex The knee jerk is an example of the simplest type of reflex. When the knee is tapped, the nerve that receives this stimulus sends an impulse to the spinal cord, where it is relayed to a motor nerve. This causes the quadriceps muscle at the front of the thigh to contract and jerk the leg up.. A reflex bending of the foot resulting from contraction of the calf muscles when the Achilles tendon is sharply struck. Also called Achilles jerk, Achilles tendon reflex, ankle reflex, triceps surae reflex.
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- When jerks result from brief cessation of ongoing muscular activity, they are called negative myoclonus (NM). Positive myoclonus is generally more common, while NM frequently occurs in hospital settings, as a result of toxic–metabolic causes.
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About us About us. In the early 1990's Lockwood Broadcast Group lit up the television airwaves with the low power television station - WPEN. In 1997, Lockwood purchased WAWB, then The WB affiliate from Bell Broadcasting, LLC. changing the call letters to WUPV and its affiliation to UPN.
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- jerky adjective (MOVEMENT) › of, relating to, or being a short, sudden movement or someone or something moving in this way: The film had jerky, Chaplinesque motion, and the audio was out of sync with the video. (Definition of “jerky” from the Cambridge Academic Content Dictionary © Cambridge University Press) Translations of “jerky”
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H-reflex The H-reflex (or Hoffmann's reflex) is a reflectory reaction of muscles after electrical stimulation of sensory fibers (Ia afferents stemming from muscle spindles) in their innervating nerves (for example, those located behind the knee).
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Spinal and StretchReflexes The knee-jerk and other tendon reflexes differ significantly from other types of reflexes in that no central nervous system interneurons are involved in the knee-jerk reflex. Under normal circumstances, brain pathways descend onto the same motor neurons, constantly modulating the strength of stretch reflexes.
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Absent knee jerk reflex Absent knee jerk reflex. Absent knee jerk reflex: Introduction. Absent knee jerk reflex: Absent knee jerk reflex is where the leg fails to kick forwards in response to tapping of the patellar tendon. See detailed information below for a list of 3 causes of Absent knee jerk reflex, Symptom Checker, including diseases and drug side effect causes.
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- Sir Charles Sherrington, an English neuroscientist, defended the neuron doctrine theory and carried out a great deal of research to provide evidence for it. A kneejerk reaction. During his earlier years of research, Sherrington concentrated his studies on reflex arcs – the neural pathways that control a reflex such as a knee jerk.
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Myoclonic jerk A myoclonic jerk is the brief, involuntary twitching of a muscle or group of muscles. It may be caused either by a sudden muscle contraction, or a sudden lapse of contraction.
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reflex The sensory side of the reflex arc conveys specificity as to which reflex will be activated. The remainder of the reflex response is governed by the specific synaptic connections that lead to the effector neurons. A familiar reflex is the knee-jerk or stretch reflex. It involves the patellar (kneecap) tendon and a group of upper leg muscles. Other muscle groups show similar reflexes.
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knee jerk knee jerk (knee reflex) a kick reflex produced by sharply tapping the patellar ligament. To test this reflex, the lower part of the leg is allowed to hang relaxed (such as by crossing the legs at the knees) and the examiner taps the ligament below the patella with a small rubber hammer.
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What Muscles Are Used in the Clean-and-Jerk Lift? What muscles are used in the clean-and-jerk lift? The quadriceps are the primary muscles used in the clean and jerk, while secondary muscles used include the hamstrings, calves, chest, back, forearms, triceps, shoulders and biceps, according to Fit Stream.
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Top 12 Hip hop Dance Styles Jerkin is a fairly recent hip hop dance trend. It involves twitchy dances moves called ‘jerks’ wherein the performer executes a set of leg stretches in and out. Jerkin’ is more of a sub-culture trend, if taken together with its dress code of neo-coloured skinny jeans and Chuck Taylors.
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Chaos theory The third derivative of position w.r.t. time is called a jerk. What exactly is a jerk? What's the fourth derivative of position called?
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- This includes the activity of the accessory male sex organs and development of male secondary sex characteristics. Androgens were first discovered in 1936. Androgens are also the original anabolic steroids and the precursor of all estrogens. The primary and most well-known androgen is testosterone.Dihydrotestosterone (DHT) and androstenedione are less known generally, but are of equal importance in male development.his includes the activity of the accessory male sex organs and development of male secondary sex characteristics. Androgens were first discovered in 1936. Androgens are also the original anabolic steroids and the precursor of all estrogens. The primary and most well-known androgen is testosterone.
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- A hiccup (/ˈhɪkəp/ HIK-əp; also spelled hiccough) is an involuntary contraction (myoclonic jerk) of the diaphragm that may repeat several times per minute. In medicine, it is known as synchronous diaphragmatic flutter (SDF), or singultus, Latin for the act of catching one's breath while sobbing.
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qwertyuiop []sdfghjkl;âzxcvbnm,./ Disclaimer: soda jerk definition / meaning should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.
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knee jerk the area around the knee joint, a hinge joint that is one of the largest joints of the body, sustaining great pressure. The knee is formed by the proximal portion of the tibia, the distal end of the femur, and the patella, or kneecap.